Pin-fastener.



No. 783,941. PATENTED FEB. 28, 1905.

' P. E. FARNHAM.

PIN FASTENER.

APPLICATION FILED FEB. 23. 1904.

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no. 783,9t1.

l NlTliU STATES 'lPatented. February 28, 1905.

PATENT Tricia.

PIN-FASTENER- SIPECIFIGATION formingpart of Letters Patent 110783341,dated February 28, 1905.

Application filed February 23,1904:- Serial No. 194,986.

of Rhode Island, have invented certain new.

and useful Improvements in Pin-Fasteners, of which the following is aspecification, reference being had therein to the accompanying d raw i nLike letters indicate like parts.

Figure 1 is a plan of the blank after it has been cut from a strip ofsheet metal, but before it is bent into shape. Fig. 2 is a plan of thesame after the pin-catch and ear-pieces have been bent into shape andthe center has been perforated. Fig. 3 is an end elevation of saidbent-up blank. Fig. 4 is a side elevation of my improve d pin-fastenerbefore the center thereof has been cut out. Fig. 5 is a side elevationof the same after the center has been cutout. Fig. 6 is a side elevationof the same after its central annular flange has been spread or flaredoutwardly. Fig. '7 is a diametrical section of a button-head having acentral circular undercut socket or recess to receive the centralannular flange of my improved pin-fastener. Fig. 8 shows saidpinfastener secured in position upon the buttonhead in the socket orrecess thereof, said pinfastener being shown in side elevation and thebutton being shown in diametrical section. Fig. 9 is a plan view of myimproved pinfastener in position upon the back side of the button. Fig.10 is a side elevation of the pin used in said device. Fig. 11 is a sideelevation of a button ru'ovided with my improved pin-fastener, thepin-tongue being disengaged from the pin-catch. Fig. 12 is a sideelevation of the same with the end of the pin-tongue engaged with thepin-catch. Figs. 13, 14, and 15 show modilied forms of my saidinvention.

My invention relates to the class of pinfasteners; and it consists ofthe novel construction and combination of the several elements allformed integral of one piece of sheet metal, as hereinafter moreparticularly described, and specifically set forth in the claims.

From a strip of sheet metal .I cut by a suitable die and plunger a blankof the shape shown in Fig. 1, consisting of a bar A B, havall thesebeing made of one piece of metal.

The head D has formed thereon two pivot projections (I a and twoprojections or stops Z) 7). This piece after it has been cut from thesheet stock and as a part of the same operation has its head D bent, asshown in Fig. 2, (but best in Fig. 3,) so as to stand angularly butdivergingly out from the bar A to form ear-pieces c c. The foot E istransversely curved and longitudinally bent to form a rigid pin-catch(Z, and the central circular portion C is cupped, as seen in Figs. 3.4C, 5, and 6. As shown in Fig. t the cupped portion (1 has an integralbottom a, but this bottom a is cut out, leaving an annular edge, asshown in Fig. 5. This annular edge drawn out to form a flaringsharp-edged annular flangef, as shown in Fig. 6.

In Fig. 7 is shown a circular button-head F, preferably made ofmothcr-of-pearl and having a central circular recess or socket 7, whoseedge is undercut all around. The annular flaring flangefis inserted inthe circular undercut recess or socket (j of the button F, and bypressure applied by suitable means the annular flangef is spreadradiall,\ to underlie and engage the dovetailed edge of the undercutrecess or groove 1 of the button, and so the pin-fastening and buttonare se cured together, as illustrated in Figs. 8 and 9. The pin-tongue Ghas an eye m. The earpieces a c are pinched or bent together, so as tobe substantially at right angles with the portion A of the bar and to beparallel with each other. The projections u u of the ears 0 (2 thusenter into the eye In of the pin-tongue Ur and practically abut eachother, thus constituting a pivot upon which the pin-tongue G turns. Theprojections 71 71 of the ears 0 0 form bearings or fulcrum-points uponwhich the pin-tongue is sprung, as seen in Fig. 12, to engage thepin-catch (Z.

ln Figs. 13, 14:, and 15 1 show a modilied form of my invention in whichthe central circular enlargement U is made with two opposite segmentalflanges n. a integral therewith; but said central portion C is notperforated, as in Fig.5.

I claim as a novel and useful invention and desire to secure by LettersPatent 1. The blank for a pin-fastener herein described, consisting of abar A, B, having a central approximately circular enlargement 0 providedwith a central annular flange of a diameter less than that of theenlargement C, a tongue E extending at a right angle from the outer endof the bar B, a cross-head D with rounded ends each of which has a pivotprojection a and also on the inner edge next to the bar A a squareprojection b, all of said parts being formed in one piece of metalintegral throughout, substantially as specified.

2. The one-piece improved pin-fastener herein described, consisting of abar having at one end two ear-pieces each provided with a pivotprojection and a fulcrum-point and also having at its opposite end apin-catch and also having a single, sharp-edged central annular flangeadapted to be spread radially to form an increased diameter of its outeredge, substantially as specified.

3. The combination of a button having on one side thereof a circularrecess or groove with an undercut edge, a one-piece pin-fastener,comprising a bar having on one end a hinge-joint and on the opposite enda pin catch and also having a central enlargement with an annular flangeengaging .said button by extending beneath the undercut edge of saidrecess or groove, and a pin-tongue pivot ally mounted at one end in saidhinge-joint and having its opposite end engageable with said pin-catch,substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK E. FARN HAM.

\Vitnesscs:

SAMUEL S. S'roN-n, W ARREN R. Peace

